Triforis perversa var. cylindrata Monterosato, 1878

Triforis perversus var. cylindrata Monterosato, 1878a: 98 .

Triforis (Monophorus) perversus var. cylindrata Monterosato, 1878 — Sacco 1895: 64, pl. 3, fig. 63.

Triphora perversa f. cylindrata Monterosato, 1878— Nordsieck 1968b: 155.

Type locality. Italy, Palermo .

Type material. Type material not located so far.

Distribution. Italy (Monterosato 1878a; Sacco 1895; Ferrero Mortara et al. 1984).

Geological age. Miocene (Sacco 1895; Ferrero Mortara et al. 1984).

Remarks. The genus Triforis is of feminine gender, therefore the name should be Triforis perversa var. cylindrata . It is considered a junior synonym of Trochus perversus Linnaeus, 1758 (Bouchet 1985) .